Polishing machine having combined alternating translational and rotational tool motion
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United States of America Patent
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Feb 22, 1994
Issued Date -
N/A
app pub date -
Jun 11, 1993
filing date -
Jun 4, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A polishing machine comprises a vertical frame 1, a workpiece-carrier plate which is horizontally movable in at least one direction, and a support column 3 vertically movable in relation to the frame and supporting a polishing unit comprising a tool holder 9 carried by a slide 41 driven in translational motion by an eccentric device operated by an electric motor 8. The tool holder thus undergoes an alternating translational or reciprocating motion, and a hydraulic jack 50 is provided to urge the tool holder against the workpiece being polished. The structure for imparting the alternating translational motion is formed by an internal connecting rod-crank assembly 34, 46 mounted in the slide 41.
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